AP Photo/L.M. Otero
Republican presidential hopeful former Massachusetts Gov. Mitt Romney celebrates winning the Michigan presidential primary with his wife Ann Romney, left, in Southfield, Mich., Tuesday, Jan. 15, 2008.
AP Photo/Charles Dharapak
A voter application Michigan's primary election is seen on a table at a polling station in Traverse City, Mich., Tuesday, Jan. 15, 2008. The Republican race between Sen. John McCain and former Gov. Mitt Romney has garnered the most attention. The scenario was much different for the Democrats. Due to a dispute with the Democratic Party, only Sen. Hillary Clinton and Rep. Dennis Kucinich are on the Democratic ballot.
AP Photo/Alex Brandon
A voter goes into a polling place in Warren, Mich. Tuesday, Jan. 15, 2008.
AP Photo/Alex Brandon
A voter takes his ballot as he votes in Warren, Mich. Tuesday, Jan. 15, 2008.
AP Photo/Paul Sancya
A voter casts his ballot in Grosse Pointe Park during the Michigan primary Tuesday, Jan. 15, 2008.
AP Photo/Charles Dharapak
Republican presidential hopeful, Sen. John McCain, R-Ariz., sits on his campaign plane as it arrives in Ypsilanti, Mich., on the morning of Michigan's primary election Tuesday, Jan. 15, 2008.
AP Photo/L.M. Otero
Republican presidential hopeful, former Massachusetts Gov. Mitt Romney greets supporters at a campaign rally on primary day in Grand Rapids, Mich., on the day of Michigan's primary election Tuesday, Jan. 15, 2008.
AP Photo/Alex Brandon
Republican presidential hopeful, former Arkansas Gov. Mike Huckabee, and his wife Janet Huckabee, talk with a voter in front of a polling place during a campaign stop in Warren, Mich. Tuesday, Jan. 15, 2008.
AP Photo/Charles Dharapak
Republican presidential hopeful Sen. John McCain, R-Ariz., speaks to reporters outside a polling station on the morning of Michigan's primary election in Traverse City, Mich., Tuesday, Jan. 15, 2008. At rear is Cindy McCain.
AP Photo/L.M. Otero
Republican presidential hopeful former Massachusetts Gov. Mitt Romney pauses while speaking to the Detroit Economic Club in downtown Detroit, Mich., Monday, Jan. 14, 2008.
AP Photo/Alex Brandon
Republican presidential hopeful former Arkansas Gov. Mike Huckabee speaks at a campaign stop in Warren, Mich., Monday, Jan. 14, 2008.
AP Photo/Charles Dharapak
"I Voted" stickers are for the taking on a table at a polling station on the morning of Michigan's primary election in Traverse City, Mich., Tuesday, Jan. 15, 2008.